Wireless communication device, wireless communication system, wireless communication method, report information transmitting method, and scheduling method

Abstract

A wireless communication device receives signals using a channel allocated from N channels to the wireless communication device by another wireless communication device. The wireless communication device includes: a storage that stores information concerning at least newest (M−K) request channels among M request channels that are candidates to be allocated; an additional channel selector that selects K additional channels to be newly added to request channels from the N channels excluding the (M−K) request channels, selects at least newest (M−K) request channels from the request channels including the (M−K) request channels stored and the K additional channels selected, and stores information indicative of the (M−K) request channels selected in the storage; and a report information generator that generates report information that is to be reported to the other wireless communication device and includes information indicative of the K additional channels selected by the additional channel selector.

1 . A wireless communication device that receives signals using a channel allocated from N channels to the wireless communication device by another wireless communication device, comprising:
 a storage that stores information concerning at least newest (M−K) request channels among M request channels that are candidates to be allocated;   an additional channel selector that selects K additional channels to be newly added to request channels from the N channels excluding the (M−K) request channels, selects at least newest (M−K) request channels from the request channels including the (M−K) request channels stored and the K additional channels selected, and stores information indicative of the (M−K) request channels selected in the storage; and   a report information generator that generates report information that is to be reported to the other wireless communication device and includes information indicative of the K additional channels selected by the additional channel selector.   
   
   
       2 . The wireless communication device according to  claim 1 , comprising
 a channel quality measuring unit that measures channel qualities of the N channels based on reception signals from the other wireless communication device, wherein   the additional channel selector selects the K additional channels based on the channel qualities.   
   
   
       3 . The wireless communication device according to  claim 1 , wherein the report information generator generates report information including information indicative of channel qualities of the K additional channels in addition to the information indicative of the K additional channels. 
   
   
       4 . The wireless communication device according to  claim 2 , wherein:
 the additional channel selector selects K additional channels from the N channels excluding the (M−K) request channels stored in the storage, selects, from the channel qualities, channel qualities of M request channels including the (M−K) request channels stored and the K additional channels selected, selects at least newest (M−K) request channels from the M request channels, and stores information indicative of the (M−K) request channels selected in the storage; and   the report information generator generates report information including information indicative of the channel qualities of the M request channels selected by the additional channel selector.   
   
   
       5 . A wireless communication device that receives signals using a channel allocated from N channels to the wireless communication device by another wireless communication device, comprising:
 a demultiplexer that demultiplexes, from a reception signal received from the other wireless communication device, report information including information indicative of K additional channels to be newly added to request channels that are candidates to be allocated;   a buffer that extracts the information indicative of the K additional channels from the report information demultiplexed, selects newest M request channels from channels including the K additional channels indicated by the information extracted and M request channels indicated by information stored in the buffer, and stores the M request channels selected in the buffer; and   a scheduler that schedules channels to be allocated to the other wireless communication device based on the M request channels selected by the buffer.   
   
   
       6 . The wireless communication device according to  claim 5 , wherein:
 the report information comprises information indicative of the K additional channels and channel qualities thereof;   the buffer stores information indicative of the M request channels and channel qualities thereof;   the buffer selects newest M request channels from channels including the K additional channels extracted from the report information and the M request channels indicated by the information stored in the buffer, stores the M request channels selected in the buffer, extracts information indicative of the channels qualities, selects information indicative of channel qualities of the M request channels selected from the information indicative of the channel qualities extracted and the information indicative of the channel qualities stored in the buffer, and stores the information selected in the buffer; and   the scheduler schedules channels to be allocated to the other wireless communication device based on the information indicative of the M request channels and the channel qualities thereof which are selected by the buffer.   
   
   
       7 . The wireless communication device according to  claim 5 , wherein:
 the report information comprises information indicative of the K additional channels and channel qualities of M request channels comprising the K additional channels;   the buffer extracts the information indicative of the channel qualities of the M request channels including the K additional channels in addition to the information indicative of the K additional channels from the report information; and   the scheduler schedules channels to be allocated to the other wireless communication device based on the information indicative of the M request channels selected by the buffer and the information concerning the channel qualities which is extracted by the buffer.   
   
   
       8 . A wireless communication system comprising a first wireless communication device and a second wireless communication device that receives reception signals using a channel allocated from N channels by the first wireless communication device,
 the second wireless communication device comprising
 a storage that stores information concerning at least newest (M−K) request channels among M request channels that are candidates to be allocated; 
 an additional channel selector that selects K additional channels to be newly added to request channels from the N channels excluding the (M−K) request channels, selects at least newest (M−K) request channels from the request channels including the (M−K) request channels stored and the K additional channels selected, and stores information indicative of the (M−K) request channels selected in the storage; and 
 a report information generator that generates report information that is to be reported to the other wireless communication device and includes information indicative of the K additional channels selected by the additional channel selector, and 
   the first wireless communication device comprising:
 a demultiplexer that demultiplexes the report information from a reception signal received from the second wireless communication device; 
 a buffer that extracts the information indicative of the K additional channels from the report information demultiplexed, selects newest M request channels from channels including the K additional channels indicated by the information extracted and M request channels indicated by information stored in the buffer, and stores the M request channels selected in the buffer; and 
 a scheduler that schedules channels to be allocated to the second wireless communication device based on the M request channels selected by the buffer. 
   
   
   
       9 . A wireless communication method for a wireless communication system comprising a first wireless communication device and a second wireless communication device that receives reception signals using a channel allocated from N channels by the first wireless communication device, the wireless communication method comprising:
 a first step of the second wireless communication device selecting K additional channels to be newly added to request channels from the N channels excluding newest (M−K) request channels among previous M request channels that are candidates to be allocated;   a second step of the second wireless communication device generating report information including information indicative of the K additional channels selected in the first step;   a third step of the second wireless communication device transmitting the report information generated in the second step to the first wireless communication device;   a fourth step of the first wireless communication device receiving the report information transmitted in the fourth step;   a fifth step of the first wireless communication device extracting the information indicative of the K additional channels from the report information received in the fourth step, and selecting, as current request channels, newest M request channels from channels including the K additional channels indicated by the information extracted and the previous M request channels; and   a sixth step of the first wireless communication device scheduling channels to be allocated to the second wireless communication device based on the M request channels selected in the fifth step.   
   
   
       10 . A wireless communication method for a wireless communication device that receives signals using a channel allocated from N channels to the wireless communication device by another wireless communication device, the wireless communication method comprising:
 a first step of the wireless communication device selecting K additional channels to be newly added to request channels from the N channels excluding newest (M−K) request channels among previous M request channels that are candidates to be allocated;   a second step of the wireless communication device generating report information including information indicative of the K additional channels selected in the first step; and   a third step of the wireless communication device transmitting the report information generated in the second step to the other wireless communication device.   
   
   
       11 . A wireless communication method for a wireless communication device that receives signals using a channel allocated from N channels to the wireless communication device by another wireless communication device, the wireless communication method comprising:
 a first step of the wireless communication device receiving report info nation transmitted from the other wireless communication device;   a second step of the wireless communication device extracting information indicative of K additional channels from the report information received in the first step, and selecting, as current request channels, newest M request channels from channels including the K additional channels indicated by the information extracted and previous M request channels; and   a third step of the wireless communication device scheduling channels to be allocated to the other wireless communication device based on the M request channels selected in the second step.